Singleton d



UNITED STAT-as PATENT OFFICE.

SINGLETON D. HATCI-IER, OF. CLEVELAND, OHIO, ASSIGNOR OF TlVO-THIRDS TO FRANK A. EDMONDS AND lVILL F. CROLEY, OF SAME PLACE.

BEVEL-SQUARE.

SPECIFICATION forming part of Letters Patent No. 451,659, dated May 5, 1891.

Application filed July 23, 1890- Serial No. 359,605. (No model.)

To all whom it may concern: and 3 in arm B will register, respectively, Beit known thatI, SINGLETON D. HATCHER, with holes and d in member A, and when of Cleveland, in the county of Cuyahoga and arm B is collapsed or folded against arm A State of Ohio,have invented certain new and holes (Z and c in member A will register, re- 5 useful Improvements in Adjustable Squares; spectively, with holes 1 and 5 in arm B. If and I do hereby declare the following to be a it is desired to have a miter-square, arm B is full, clear, and exact description of the invenbut partially folded that is, until hole 2 of tion, such as will enable others skilled in the said arm registers with hole cl of member A, art to which it pertains to make and use the when arm B will just be at-an angle of forty- {0 same. five degrees to arm A. By tightening one or My invention relates to improvements in both of screws 6 and f in the respective holes adjustable squares in which the two arms that register the square may be secured in thereof are rabbeted and pivotally secured any of the adjustments aforesaid. By proto each other, so that the short arm may be viding arm B with additional holes the square 5 folded against the long arm for convenience may be made capable of intermediate adj ustin storing or in carrying the square. Positive ments, and it will be observed that the screws stops are provided for adjusting the two arms need not be removed in making the different in position, respectively, at angles offortyadjustments, but need only be withdrawn five degrees and of ninety degrees to each from the holes in arm B, and hence there is 2 other, and a scale is sometimes provided for no liability of the screws becoming lost. Al-

convenience in adjusting the arms at interthough assisting screw f in retaining the mediate angles. squarein its folded or extended position, as

In the accompanying drawings, Figures 1 shown, screw 6 might be dispensed with. and 4 are views showing different working A modification is shown in Fig. 4, wherein 7 25 positions of the square. Fig. 2 is an edge arm B is provided with a curved slot 2', in View, partly in section, showing the construcwhich operates the shank of a thumb-screw tion of the joint. Fig. 3 shows the short arm I, and arm A is provided witha mark a and of the square detached. member B is provided with ascale b for con- A represents the long arm of the square, venience in setting the square, and hence it 0 and B the short arm. ,The long arm has a will be observed that by adjusting the setshort member A, square in plan and preferscrews in slot 1 the square may be accurately ablyintegraltherewith,thedimensionsthereof set at an angle of forty-five degrees or at any in either direction corresponding with the intermediate angle. width of arm B. Arm B and member A are The ordinary carpenters squareis very in- S5 3 5 joined together, as shown more clearly in Fig. convenient in carrying it about with a small 2, and pivotally secured by means of a rivet kit of toolsfor instance, in doing job-work, C, the two corners a and b being rounded, so and it is also a cumbersome device to store that arm B may fold against arm A, as shown away; but with my improved construction, in dotted lines, Fig. 4. The other corners a whereby the two arms of the square may be 4c and b are left full and square, so as to abut collapsed or folded, these objectionable feathe opposing shoulders, and thereby form tures are entirely overcome also, it is a great stops when arm B is extended exactly at right convenience in having a square that can be angles to arm A. Member A is provided manipulated so as to be used for a miter-. with two holes 0 and d of equal dimensions, and square and for a general bevel-square, so that 45 arm B has corresponding holes 1, 2, 3, 4, and a carpenter need only to carry the one tool 5, all of these holes being screw-threaded and for all these purposes. countersunk, and screwse and f are provided What I claim is for engaging the respective holes flush with 1. An adjustable square having the two the surface of the square, the arrangement arms thereof rabbeted and pivotallysecured 5c of these holes being such that when arm Bis to each other, so that they may be folded, posiextended at a right angle to arm A holes at tive stops being provided, substantially as shown, for adjusting the arms of the square in position at angles of different degrees to each other, substantially as set forth.

2. An adjustable square comprising two arms, one of which has a short member pivotally secured. to the other arm, whereby the latter may be folded against the arm having the short member, a series of threaded holes in said short member and one or more corresponding threaded holes in the collapsible or folding arm, the arrangement being such that the holes in the folding or collapsible arm will register with holes in the short member of the other arm when the square is set, re-

SINGLETON l). llA'lCllER.

\Vitnesses:

CHAS. ll. DOREH, Wain) IToovnR. 

